God-Level Sign-in System

[Ding!]

[Congratulations, Host! You have successfully signed in at the Forest of Death and received the ability: I Have a Big Corn!]

[I Have a Big Corn: After the Host calls out the incantation, "I Have a Big Corn," you can summon a corncob on a stick that has healing effects. (The amount consumed will be calculated according to the Host's chakra.)]

The world of Naruto. The Leaf.

Inside the Forest of Death.

Although Uchiha Gray's appearance hadn't changed at all, an invisible force appeared in his mind in an instant.

It was as if he had already mastered the ability and used it millions of times. The ability he'd received from signing in was instantly at his command!

He'd been in this world for a full eight years, and the system had awakened early on.

The system's name was "God-Level Sign-in System." It sounded freaking awesome, didn't it?

But so far, what it had given him was—

Aside from I Have a Big Corn, there was I Have a Small Grilled Sausage. What made him even angrier was that it had even given him Cat's Cradle???

"System, you awakened when I transmigrated to this world. But take a look at the rewards you've given me for signing in all these years!"

"Cat's Cradle, jump rope—and what's worse, you even gave me Mastery of Flower Arrangement!"

Uchiha Gray lamented bitterly. "Do you freaking know that in three years, Itachi will wipe out the Uchiha Clan?"

"When that happens, am I supposed to play Cat's Cradle and jump rope with Uchiha Itachi? Or play Cat's Cradle with that sweet, airheaded Kaguya Otsutsuki, who'd get distracted by Uzumaki Naruto's Sexy Jutsu?"

"Are you freaking waiting for me to die so you can get a new host?!"

Gray cursed furiously. The system, usually so "sharp-tongued," inexplicably stuttered for a moment.

Uchiha Gray's eyes lit up. Could it be that the system had realized how serious the problem was?

As for why Uchiha Gray, despite being a transmigrator who knew Uchiha Itachi would carry out the clan's extermination plan, hadn't tried to get on good terms with Itachi, there was only one reason.

It wouldn't work.

That's right. In the original story, Itachi was a heartless bastard who could even stab his own parents and little girlfriend. Did Gray really expect him to spare him?

Heh. Even if they were close, Gray would probably still meet a dead end and be killed without hesitation.

Of course, the reason Uchiha Gray was so anxious was that he had no idea what was going on. As a transmigrator from the Uchiha Clan, he hadn't even awakened the Uchiha Clan's Sharingan. In other words, all he could use right now were ordinary ninjutsu.

The Sharingan was one of the Three Great Dojutsu of the Shinobi World, and he hadn't awakened it at all.

He could feel powerful energy within his eyes, but it was as if something was blocking it.

In short, at best, he was about as strong as a Genin—a complete weakling with a Kunai in hand.

So before Itachi wiped out the clan, he had to grow stronger and survive!

[Host's question: All sign-in locations are formed from the fortunes of heaven and earth. All of the system's actions comply with every clause of the transmigrator code of conduct and the law of conservation of matter!]

Uchiha Gray was speechless.

He couldn't help rolling his eyes inwardly.

You're a God-Level Sign-in System! You're obviously the thing that violates the law of conservation of matter the most! And you're spouting clauses from some transmigrator code of conduct? Do you freaking think I'm an idiot?

After finishing his sign-in for the day, Uchiha Gray decided to go home.

The Totsuka Blade and Yata Mirror that Uchiha Itachi wielded probably weren't innate parts of his Susanoo. After all, neither Uchiha Obito, Sasuke Uchiha, nor Uchiha Madara had any divine weapons in their Susanoo.

So, as the clan leader's son, the most likely explanation was that old man Fugaku Uchiha had secretly given his own son a little perk.

If Gray could get his hands on the Totsuka Blade and Yata Mirror—

Then when Uchiha Itachi wiped out the clan, his chances of surviving would undoubtedly increase considerably.

Most importantly, he didn't think there was any good reason to leave those two treasures to that heartless bastard, Uchiha Itachi.

[Ding! The system has detected that your current location is a special sign-in location. A sign-in reward will be issued!]

[Congratulations, Host! You have received the attribute: Blue Buff!]

[Blue Buff: Blue Buff will increase the Host's chakra tenfold and restore it at a rate of 1% per second!]

Boom!

In an instant, immense power surged through Uchiha Gray's body.

His chakra had already reached the standard for a Genin, but now it was growing wildly.

It had increased tenfold!

His physical strength hadn't improved, but the chakra inside him flowed faster, and he could feel it circulating more smoothly.

The next moment, a sudden stabbing pain struck his eyes. Then blood streamed from them, and a pair of Two-Tomoe Sharingan appeared in his eye sockets!

Uchiha Gray stopped in his tracks on the way home. Feeling the immense chakra within him and the sudden appearance of his Two-Tomoe Sharingan, he froze.

A special sign-in location?

He'd received Blue Buff?

In the past, the system had always required him to go to specific locations to sign in. Sometimes, he'd even had to go to the women's bathhouse. But this time, before he'd even left the Forest of Death, a special sign-in location had popped up?

But none of that could suppress the excitement in Uchiha Gray's heart.

"Hahaha! I got Blue Buff from signing in and awakened my Two-Tomoe Sharingan! System, you were going on about the fortunes of heaven and earth, but you're clearly just afraid I'll die and you'll lose your host, aren't you?"

The system seemed to have fallen asleep. It didn't reply at all.

But that didn't affect Uchiha Gray's good mood.

Uchiha Itachi had awakened his Sharingan at the age of eight.

Gray had done the same, and his was a Two-Tomoe Sharingan—stronger than Itachi's!

[Ding! Because the Host gained stronger mental power after transmigrating, awakening the Sharingan required even more powerful chakra. Now that the Host has gained powerful chakra, the Sharingan—which should have awakened long ago—has awakened naturally.]

"Heh."

Gray scoffed. "System, you know all that, but you didn't say a word to me all these years. And you still claim you aren't rigging things behind the scenes?"

Gray had gotten a sense of that crappy system's ways.

Feeling the powerful chakra inside him, Gray held back his excitement and cried, "Fire Style: Great Fireball Technique!"

Boom!

The fireball blazed hot, sending waves of heat rolling through the air.

The Great Fireball had originally been only about five meters across, but boosted by his powerful chakra, it grew to a full ten meters. It blotted out the sky, towering even above some of the trees. Its terrifying destructive power instantly evaporated part of the lake!

Uchiha Gray was surprised, but very pleased with the technique's power.

That was the benefit of chakra.

The stronger the chakra, the more powerful the ninjutsu it could unleash. Just look at Senju Hashirama's Wood Release and Uchiha Madara's Fire Release.

And as he grew older, Blue Buff's effects would become even more terrifying. It would continuously increase his chakra's rate of accumulation and his total chakra reserves. In the later stages, he might even rival a Tailed Beast.

[Ding! A sign-in task has been issued.]

[Please go to the Hyuga Clan and stay there for ten seconds to sign in!]

[Task reward: Some of the abilities from the Kizaru Fruit Ability Template in One Piece!]